Selling covered calls can be an effective way to generate income from stocks you already own. But collecting a premium is only part of the equation. The decisions you make when selecting a strike price and expiration date can have a meaningful impact on how much income you receive, how long your shares remain tied to the position, and whether those shares are ultimately called away.
If you’re using a covered call strategy to generate retirement income, it’s important to look beyond the premium offered by an option. Your choice of strike price and expiration date can influence both the income you collect and the potential return on your underlying stock. Let’s look at the factors that can help you make better decisions when selecting covered calls.
Understanding Strike Prices
When you sell a covered call, you receive option premium in exchange for giving the call buyer the right to purchase your shares at a predetermined strike price. The strike price is the price at which you agree to sell your shares if the call buyer exercises that right.
Your choice of strike price involves balancing two objectives: generating option income and earning potential capital appreciation.
Capital appreciation is the gain you realize on your stock if the call is exercised and your shares are assigned (sold) at a price higher than what you originally paid for them.
Generally, covered call strike prices fall into three categories:
- In-the-money (ITM): The strike price is below the current market price of the stock.
- At-the-money (ATM): The strike price is approximately equal to the current market price.
- Out-of-the-money (OTM): The strike price is above the current market price.
Each category offers a different combination of premium income and potential stock appreciation.
For example, imagine you own 100 shares of a stock currently trading at $50 per share. You are considering selling a covered call and have three possible strike prices:
| Strike Price | Position | Potential Outcome |
| $47 | In-the-money | Higher premium, but shares could be called away below their current market value |
| $50 | At-the-money | Higher premium potential, with a greater likelihood of assignment |
| $55 | Out-of-the-money | Lower premium potential, but more room for stock appreciation |
These are general relationships, not guarantees. Actual premiums depend on several factors, including volatility and time until expiration.
The key is understanding what you agree to when you sell the option.
How Strike Price Affects Your Income
One of the biggest considerations when selecting a strike price is the premium you receive.
All else being equal, options with strike prices closer to or below the current stock price generally offer higher premiums than options with strike prices farther above the current stock price.
Why? Because there is a greater likelihood that the option will finish in the money and be exercised.
However, a higher premium doesn’t automatically make an option the better choice.
Let’s return to our example of a stock trading at $50 per share. Suppose you are comparing two covered calls:
- A $50 strike price with a premium of $2.00 per share.
- A $55 strike price with a premium of $0.75 per share.
If you sell one contract, you would collect $200 from the $50 strike price or $75 from the $55 strike, before transaction costs.
The $50 strike generates more immediate income, but it also gives the buyer the right to purchase your shares at the current market price. The $55 strike provides less income but allows the stock to appreciate by another $5 per share before reaching the strike price.
This illustrates an important trade-off. A covered call with a higher premium may provide more immediate income, while a higher strike price may offer greater potential for stock appreciation.
Neither approach is inherently better. The right choice depends on your objectives, your outlook for the stock, and your willingness to sell your shares at the selected price.
Choosing the right strike price is an important part of developing a covered call strategy that balances premium income with potential capital appreciation.
Choosing the Right Expiration Date
Once you’ve selected a potential strike price, the next decision is how long you want the option to remain open.
An option’s expiration date determines how much time the buyer has to exercise the contract. For the seller, it determines how long the shares are committed to the covered call position.
For investors focused on generating regular portfolio income, a covered call strategy built around monthly options (those with approximately 30 days until expiration) can offer an attractive balance between premium income and flexibility.
Monthly options provide several advantages:
- More frequent income opportunities: You can evaluate your positions and potentially sell new covered calls each month.
- Greater flexibility: You have more frequent opportunities to adjust your strategy as stock prices and market conditions change.
- Faster time decay: Options generally experience a greater rate of time decay as expiration approaches, which can benefit option sellers.
- More frequent portfolio management: Monthly expirations provide regular opportunities to review your holdings and make decisions about your next trades.
Longer-term options may offer larger upfront premiums, but they also commit your shares for a longer period. This can limit your ability to respond to changing market conditions or take advantage of new income opportunities.
Shorter-term options are another possibility, but they require more frequent monitoring and trade management.
For retirement investors who want to establish a consistent income routine, monthly options can provide a practical middle ground. They offer recurring opportunities to generate premium income without tying up shares for extended periods.
The Role of Time Decay
One reason expiration dates matter so much is something known as time decay, or theta.
An option’s value consists of intrinsic value and time value. Time value represents the additional amount buyers are willing to pay for the possibility that the stock will move favorably before expiration.
As an option approaches expiration, its time value generally decreases. This process is known as time decay.
For option sellers, time decay can work in your favor. As the option loses time value, the cost to buy it back may decrease, assuming other factors remain relatively unchanged.
Time decay is not linear. It generally accelerates as expiration approaches, particularly for options that are at the money.
This is one reason many covered call investors favor monthly options. They provide an opportunity to benefit from time decay while regularly opening new positions. However, faster time decay doesn’t eliminate the risk of an unfavorable stock price movement. A significant decline in the underlying shares can easily outweigh the benefit of time decay.
Putting It All Together
Let’s say you own 100 shares of a stock trading at $50 per share. You want to generate additional income by selling a covered call.
After reviewing the available options, you consider the following two trades:
| Option A | Option B | |
| Strike Price | $52 | $55 |
| Expiration | 30 days | 60 days |
| Premium | $1.50 | $2.25 |
| Premium Collected | $150 | $225 |
Option B provides a larger upfront premium. However, it also commits your shares for twice as long.
Option A offers less immediate income, but you have the opportunity to evaluate the position again in 30 days and potentially sell another covered call.
If the stock remains below the strike price through expiration, the options will generally expire worthless, allowing you to retain your shares and the premium collected.
If the stock rises above the strike price, your shares may be called away. In either case, the outcome depends on the stock’s movement and the terms of the option contract.
This example highlights why comparing premiums alone can be misleading when evaluating a covered call strategy. You also need to consider how much time you’re committing, the price at which you’re willing to sell your shares, and what you plan to do when the option expires.
Making a Covered Calls Strategy Part of Your Plan
Choosing a strike price and expiration date shouldn’t be an isolated decision. It should be part of a broader plan for managing your portfolio and generating income.
Before selling a covered call, consider a few questions:
- Am I comfortable selling these shares at the selected strike price?
- Does the premium provide an acceptable return for the time commitment?
- Does the expiration date give me enough flexibility to manage the position?
- Am I comfortable with the potential outcomes if the stock rises or falls?
It’s also important to remember that covered calls do not protect you from significant losses in the underlying stock. The premium you collect provides a limited cushion against a decline, but it does not eliminate market risk.
Ultimately, successful covered call investing is about more than finding the option with the highest premium. It’s about making consistent decisions that align with your income objectives, stock ownership preferences, and tolerance for risk.
This is where having a comprehensive strategy can make a difference. The Snider Investment Method provides a disciplined framework for generating portfolio income through covered calls and cash-secured puts. Rather than leaving strike price and expiration date decisions to guesswork, the Snider Method provides specific rules and guidance designed to help you make the most of your account while staying focused on generating consistent monthly income.
When you have a plan for selecting stocks, choosing options, and managing your positions, covered calls become more than individual trades. They become part of a repeatable process designed to help turn your investment portfolio into a source of monthly income.